My fiancee is in big trouble, I need help and legal advice

I have a big problem.  My fiancee is here in canada as a live in caregiver and will be applying for PR in the next few weeks.  I am a born and raised Canadian

Long story, she just found out that she is "married" in Philippines to someone that she knew there but never agreed to marry.  Apparently he paid off some officials in the government so that this marriage is legal, he forged her signature and her mothers as a "witness".  He somehow got a copy of her birth certificate and voters card, we dont know how this happened, her mother did not give it to him.  For the past 6 years, she left Philippines and has lived and working in Taiwan and in Canada and has never lived with or been romantically involved with this guy.  He now has another girlfriend and a child with her. 

All of her canadian papers say she is single and nobody ever noticed or cared taht she did not put married (she dd not know she was, so she was not lying at the time).

We now want to get married in Canada but we are worried that if she ever went back there she will get caught for bigamy ect. 

She contacted this guy as he still lives in her home town.  He admitted to paying the official and forging the signatures but refuses to fix it.  He told her to pay for the annulment.  She is so upset now that she has to hide from her own country as she can be arrested there if reported.

I need help.  What do we do here, will this affect her PR application and can we still get married here?  I am so worried and nervous and we don't know what to do.